Milk-filtering machine



May 27, 1924. 1,495,825

E. G. VON GUNTEN MILK FILTERING MACHINE May 27, 1924 E. G. VON GUNTENMILK FILTERING MACHINE Filed Sept. 5

3 Sheets-Sheet 2 May 27, 1924. l 1,495,825 v E. G. voN GUNTEN MILKF'ILTERING MACHINE I V Filed Sept. 5. i921 3 Sheets-Sheet 5 I PatentedMay 27, 1924.

UNITED STATES EDWARD e. VONQGUNTEN, on AKRON, omo.

Application med september s, 1921. serialA No. 498,342.

To all rwhom t may concern.'

Beit known that I, EDWARD G. VON GUNTEN, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented certain new and useful Improvements in Milk-Filtering Machines,of which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to milk filtering or straining machines and oneof the principal objects of the invention is to provide a machine soconstructed that the milk in entering the machine to be passed throughthe filtering or straining medium will keep the surface of the strainingmedium clean and all sediment and foreign matter will be conducted awayfrom the contact face of the filtering medium so that the milk will bepassed through a relatively clean filtering cloth at. all times insteadof straining the milk through the dirt which accumulates on thefiltering medium as is now customary.

In all horizontal types of machines the milk is brought directly intocontact withv the under surface of the filtering cloth with the ideathat the sediment contained in the milk will fall away from the cloth.This, however, has been found to be an incorrect theory for the sedimentso collects upon the under side of the cloth that the machine clogs andit is necessary to stop operation and replace the filtering medium.

It is therefore the object of this invention to avoid this difficultyand, broadly speaking, the invention consists in directing the milk atan angle to the plane of the filtering medium so that the contactsurface thereof is always kept in a clean state and the sedimentconducted away to a point ofl discharge by gravity.

Another object of provision of a filtering machine in which thefiltering medium is arranged at an angle of approximately 45 to the milkfeed so that the sediment carried by the milk is not retained upon thefabric but washed off of' the contact surface thereof and carried awayto a point of discharge.

`A still furtherobject of theinvention is theV provision of novel meansfor supporting the filtering fabric inoperative position whereby it iseffectively held away from contact with either the top or bottom plateof the machine and whereby it maybe the invention is thev rdily removedand renewed when desira e.

A still further object of the invention is f the ltering medium inposition may be held in relatively separated positions while the machineis open for washing and renewal of the filtering medium.- y 4 Furtherobjects of the invention will appear as the following specificdescription is read in .connection with the accompanying drawings whichform a part of this application and inwhich:

FigureA 1 is a view partly in vertical section and partly in elevationof a filtering or straining machine constructed inaccordance withanembodiment of my invention;

Figure 2 is a viewV partly in sideelevation and partly in section of myimproved machine with certain of the parts in a second position.;

Figure 3 is a view in top plan of the `bot-l tom plate as hereinembodied; and

Figure 1 is a View partly in section and partly in elevationA of the4sediment chamber and the parts concomitant thereto.

Referring more particularly to the drawings, 1 represents the supportingbase from which rises the standard 2 engaged removably or otherwise inthe socket 3 formed in a lug 4 carried upon or integral with the bottomplate 5 of the machine. This bottom plate, as shown in Figure 1, isconstructed preferably of relatively light material and has formedintegrally therewith the transverse and longitudinal ribs 6 and 'fterminating at their ends in bifurcated eX- tensions or forks 8, thepurpose of which will be hereinafter described. The ribs 6 and 7reinforce and stiffen the entire base plate which, as shown in Figure 1,is provided with a marginal upstanding flange 9 having a groove 10 inits upper surface to receive the circular rubber packing 11 againstwhich the filtering ymedium is pressed lby the top plate 12. As shown inFigure 1, the top plate is also reinforced by transverse andlongitudinal ribs 13 and 14 and is provided onits under side with amarginal flange 15 which; rests upon' the filtering fabric, as willV behereinafter described, and presses the same into firm engagement withthe packing 11.

The lower end of the bottom plate 5 is L'-this chamber is substantiallypV-shaped-in provided with a. pair of pivot lugs 16 which correspondwith. Y.similar lugs,V 17 formed.l upon the top plate.; 12 and whichlare connected together by the pins 18 so that the upper and lower halvesorthe top` andbot.-v r tom plates are hinged'together and* are adaptedtomove to open position,ass hown.. in Figure 2, when it is desiredtorenew'th'e filtering fabric or washthe machin-e.'

:member -is inthe fornrofa heavy screen; or

perforated -plate and is of sufficient-strength to withstand thepressure of .the milkagainst thej'filtering fabric-and prevents thefiltering;

Vfabric from being carriedlinto contact with fthelvtop. plate bytheVpressure of thel milk thereagainst. When .the `filtering fabric fis inposition, as shown in Figure 1, Vth e..up1 per and lower Vhalves orplates 5 land :12 are clampedtoget-her, as will be no w described.Pivoted between the forks Son theends and side of the :bottom platev 5yare eye bolts,v 23 carrying thumb nuts 24 on theirthreaded free ends.These eye bolts are adapted to, beA positioned between similar r forks25k vform f1 ingHeXtensions of the reinforcing. ribsf13 and14- of thetop plate.l lVhenall of lthey eye bolts are engaged withthe forks 25andAthe thumb nutsscrewed down` thereon-the flange 15 wil-libe jammedagainstthe filter, 21 and the packingll thus effectually-hold ing thefiltering medium Vin place and producingv a fiuid tight container.. Itis of rcourse. to be .understood that: the: pivotalconnection of thelugs16 and. 1-7 isyofnsuch. character as to `permit slightrelat-ive`movement so that the'packingfmay lie-compressed at thehingedend of theplates.-v

Depending fromV a point adjacent. the lower end-of the plate 5 is asediment .cham-y ber 26.l having attached to the forward r*wall 4.thereof a drain cock 27 by :which-.the sedi-.- ment maybe removedf-rom'fthev chamber lat intervals, as VrequiJed in practice Fromzaninspection of Figure 4 itwill bef-noticed-.that

Y form,- its upper Vend. which opens-into the..

...of .the v,coclr27 the-chamberzis narrowed downs:

toa point ,-wherebyfiall f-'sediment .will-'.-beai washedth'roughgthe;cock 27,1,.whenppen W-rhenfi-t is. desired tofwamsh he inachi-negityi isfirst necessary Lto-drain:.thefaupperihalf .or upperVveompartmentcofeheemaehne .and

in order to do this I provide a drain coclr 28 connected to the.upperplate V`12` and communicating., with the upperY compartmentAindicatediat 29, the lower compartment being. indicated at` -30.A

the `upper` end thereof with an internally threaded"nipple 31 to receivea feed pipe 32;-usually` VconnectedY with the feed pumpV from thepasteurizer to the aerator and the upper plate is provided with vanoutlet nipple 33 connectedgtoa discharge pipe which .is led to anysuitablepoint. In! order. that the Vhalves held. i in separated relationin position f for,

may, be

.801 washing;thefmachine and removing and ref. placingithe .filteringcloth, I provide la brace armf't providedfat Avone end with falongitudinally extended anda-internally threaded.vr

larm '.35ywhich is screwed. upon Tthe central eye-bolt-23in the upper,-endgof lthe-lower halfl l5.

The brace Bellas its opposite endl;k

provided. .with ,a lrectangularf.hook.36 *whichA is-v of suic-ient sizeto engagefoverftheupper.2

half: `12. -and itsigrelated Y,flange 15' and -supgz fportthenpper halfin; theI position, shown adapted to .be guided in its movements bysliding in between the armsv of the. fork f 25 A r which correspondsto4Vand, is adapted to receive .the eye bolts 23 to `which -the brace lisattached." ln this:v manner alljthat isneces.j

sary is todisconnect the eyefboltsfrom the:-

upper--half and raise-the samel bythe hand hold ,37, thebracebeingguided in l.the 'forkv 25'" untilr the..upper half reaches l.theV.hook

36at lwhiclrtimethe.brace dropsso as to en-c in position. After thehook-hasbeen.re-k

:leased ,and` the, upper; half loweredinto engagement with the lowerhalf andclamped ,into-gposition, as willbe readily understoodVv ving`member. V22 Vand both properly .sterilized ora .new/cloth and retainingvkmember vplaced feed from ythe.y pump .can .bestarted andthe operationof filtering the milk, resumed.

It will benoticed 4that; as theinilk strikes the. iltening medium at an,angle. andiwithf' considerable force all sediment particlesare washed.from,v the.contactsurfacefof the iQloth and i carried, downwardlytoV 1the 1 sediment chamber,- V.26. where ,the .sediment .may be dis-Lchargedi at..vpredeter1nined a intervals, f pref--` era-blypafter `:thefilteringv` of y.each @thousand-. Y

gallonsbf. milk.

VVhatl ,claim-y i 1 A filtering .apparatuscomprising twollr...elengatedfplatesjf adaptedgso TvthatjoneLwi-ll the :,otherazthemarginal port nsA of;

between-fthe@.pleteefwhen' ein. fsu-reagiere@relatenfiandi'clampedfbetweenythe f1elle@S"I MQ 1 the plates, means forsupporting the plates in an inclined position, the lower plate adjacentits upper end being provided with an induction opening, the upper plateadjacent its lower end being provided with an eduction opening, thelower plate adjacent its lower end and below the eduction opening of theupper plate being provided with an opening extending substantiallyentirely thereacross, a sediment chamber depending from the lower plateand in communication with the space between both of the plates throughthe last named opening in the lower plate, and a drain cock incommunication with the lower portion of the sediment chamber. l

2, A filtering apparatus comprising two elongated plates adapted so thatone will overlie the other, the marginal portions of the plates beingdefined by inwardly dis.,- posed flanges, a filtering element interposedbetween the plates when in super-imposed relationv and clamped betweenthe flanges of the plates, means for supporting the plates in aninclined position, the lower plate ladjacent its upper end beingprovided with an induction opening, the upper plate adjacent its lowerend being provided with an eduction opening, the lower plate adja-v centits lower end and below the eduction opening of the upper plate beingprovided with an opening extending substantially entirely thereacross, asediment chamber depending from the lower plate and in communicationwith the space between both'of the plates through the last named openingin the lower plate, drain cock in communication with the lower portionof the sediment chamber, said sediment chamber being perpendicularlyrelated to the lower plate.

3. A filtering apparatus comprisingtwo elongated plates adapted so thatone will overlie the other, the marginal portions of the plates beingdefined by inwardly4 disposed flanges, a filtering element interposedbetween vthe plates when in super-imposed relation and clamped betweenthe flanges of the plates, means for supporting the plates in aninclined position, the lower plate adjacent its upper end being providedwith an induction opening, the upper plate adjacent its lower end beingprovided with an eduction opening, the lower plate adjacent its lowerend and below the eduction opening of the upper plate being providedwith an opening extending substantially entirely thereacross, a sedimentchamber de- 'in the lower plate, a drain cock in communication with thelower-'portion of the sediment chamber, said sediment chamber beingsubstantially V-shaped in elevation with the drain cock ,positioned at,the apex portion thereof. v

4. A filtering apparatus comprising two elongated plates adapted so thatone will overlie thel other, the marginal portions of the plates beingdefined by inwardly disposed flanges, a filtering element interposedbetween the plates when in super-imposed relation and clamped betweenthe flanges of the plates, means for supporting the plates in aninclined position, the owerplate-adjacent its upper end being providedwith an induction opening, the upper plate adjacent its lower endbeing-provided with an eduction opening, the lower plate adj acent itslower end and below the eduction opening of the'upper plate beingprovidedv with an opening extending substantially entirely thereacross,a sediment chamber de-v the plates being defined by inwardly disposedflanges to provide a chamber when the plates are in overlying relation,supporting means engaging the lower plate for holding the assembledplates in an inclined position, a filter element intersecting thechamberbetween the plates and clamped between the flanges ofthe plates, thelower plate adjacent its upper end being provided with an` inductionopening, the upper plate adjacent its lower end being provided with aneduction opening, means for holding the plates in superimposed relation,and means for pivotally connecting adjacent ends of the plates.

In testimony whereof I hereunto affix my signature. y

EDWARD G. VON GUNTEN.

